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Gauch, S.: Intelligent information retrieval : an introduction (1992)
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Xiao, Y.: Faceted classification : a consideration of its features as a paradigm of knowledge organization (1994)
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Lewis, D.W.: Making academic reference service work (1994)
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Dawson, A.; Peña McCook, K. de la: Trends affecting the roles of reference librarians (1996)
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Farmer, L.S.J.: Providing reference services for young adults : school and public librarian partnerships (1998)
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